Home / 20,190.19-27,859.83-11,238.07

Finding the Fourth Proportional to 20,190.19, 27,859.83 and 11,238.07

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Solution

The fourth proportional to 20,190.19, 27,859.83 and 11,238.07 is: 15,507.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,190.19 : 27,859.83 = 11,238.07 : x
  2. Step 2: Convert to fraction form
    20,190.19/27,859.83 = 11,238.07/x
  3. Step 3: Cross multiply
    20,190.19x = 27,859.83 × 11,238.07
  4. Step 4: Simplify right side
    20,190.19x = 313,090,663.54
  5. Step 5: Solve for x
    x = 313,090,663.54/20,190.19
  6. Step 6: Final answer
    x = 15,507.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.